Bowers & Wilkins 603 S3 vs Sonus faber Lumina III
The Bowers & Wilkins 603 S3 is more sensitive (90 dB vs 89 dB), so it plays louder per watt, is an easier load for a receiver (8 Ω vs 4 Ω) and costs less ($2,700 vs $3,000). The Sonus faber Lumina III plays lower (40 Hz vs 46 Hz).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| 603 S3 | Lumina III | |
|---|---|---|
| Receivers and amps that drive it | 29 of 29 | 28 of 29, 14 after a setting change |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| 603 S3 | Lumina III | |
|---|---|---|
| Impedance | 8 Ω | 4 Ω |
| Sensitivity | 90 dB (2.83 V, 1 m) | 89 dB (2.83 V, 1 m) |
| Low end | 46 Hz | 40 Hz |
| Drivers | 1 × 25 mm, 1 × 150 mm, 2 × 165 mm | 1 × 29 mm, 1 × 150 mm, 2 × 150 mm |
| Size | 10×40×16 in | 9×39×11 in |
| Recommended amplifier power | 30–200 W | 50–250 W |
| Weight | 27.5 kg (60.6 lb) | 15.9 kg (35.1 lb) |
| MSRP | $2,700 a pair (MSRP, September 2026) | $3,000 a pair (MSRP, September 2026) |
Every spec and pairing: Bowers & Wilkins 603 S3, Sonus faber Lumina III.
Try either one in your own room.
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References
- Bowers & Wilkins 603 S3: Spec sheet, bowerswilkins.com, retrieved September 15, 2026
- Bowers & Wilkins 603 S3: Manufacturer product page, bowerswilkins.com, retrieved September 15, 2026
- Sonus faber Lumina III: Manufacturer product page, sonusfaber.com, retrieved September 15, 2026
- Sonus faber Lumina III: Retailer listing, skybygramophone.com, retrieved September 15, 2026
- Sonus faber Lumina III: Retailer listing, paragonsns.com, retrieved September 15, 2026
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